FLOWERBEDS Here are four flowerbeds surrounded by slabs How many slabs would you need for 100 flowerbeds?
STRATEGY 1. Break the problem into smaller pieces 2. Tabulate results 3. Look for patterns and why they occur 4. Find a formula 5. Solve the problem
Break the problem into smaller pieces 1 Flowerbed has 6 slabs Draw the diagrams for 3 and 4 flowerbeds 2 Flowerbeds have 10 slabs
Tabulate results FlowerbedsSlabs
Look for patterns… FlowerbedsSlabs …and why they occur
lots of 4
Find a formula FlowerbedsWorking outSlabs x x x x418
FlowerbedsWorking outSlabs x x x n 6 + 4x x4 6 + (n-1)x (n-1)
Solve the problem 100 flowerbeds? x 4 =